let a = 10;
console.log(a);


//两种导法
let c = 20
export {c};


export let d = 60 ; 

export let obj = {
    name : ':·.',
    age : 21,
}

export {getA} from './c.js'

import {fn} from './b.js';
export {fn}

// 每个模块只能默认导出一次
export default obj;
// export {a as default}


